An iron piece of mass 360g and a density of 6g/cm if suspended by a rope so that is partially submerged in oil of density 0.9g/cm find the tension (force) in the string

1 answer

You have to know how far it is submerged

m = 0.360 kg
g = 9.81 m/s^2
tension = m g - buoyant force

buoyant force = submersed volume * 900 kg/m^3 * g